There's a $30 million purse of prizes waiting up on the moon, and 18 international teams are in the running. Join us on a trip around the world as we visit five of the most promising teams for their critical Milestone tests.

The Milestone phase of the $30 million Google Lunar XPrize is coming to a close, so we're gathering representatives from the five prize-winning teams to talk about how they plan to get to the moon by next year.

The Milestone phase of the $30 million Google Lunar XPrize is coming to a close, so we're gathering representatives from the five prize-winning teams to talk about how they plan to get to the moon by next year.